I never thought I'd see a page and a half dedicated to defining what breaking the fourth wall is. Jesus. For the record - Breaking the fourth wall is when a character speaks directly to us like in Ferris Beuller or Alfie, the character is aware he's being watched. No-one in any IM film is aware they are in a film, so the fourth wall is well and truly in tact, in fact there isn't even a hole in it. End of story I'm afraid.